EntityQ1560125· pop 7· linked from 16 articlesslurry pitSign in to savecircular concrete structure holding liquid manureConnectionshydrogen sulfideEntitynitrogenEntitypotassiumEntityphosphorusEntityfertilizerEntityhayEntitymanureEntitycropEntityhypoxiaEntitydairyEntityorganic matterEntityliquid manureEntityslurryEntityBBC News OnlineEntitymanure managementEntityCategoriesAgricultural buildingsFecesOrganic fertilizers